9results about How to "Improve cladding quality" patented technology

The invention discloses a martensite reinforced self-lubricating copper-based alloy coating and a laser cladding preparation method thereof, the martensite reinforced self-lubricating copper-based alloy coating comprises the following components in percentage by mass: 66 to 84 weight percent of Cu, 10 to 20 weight percent of Al, 3 to 10 weight percent of Ni, 3 to 10 weight percent of Mn, 0 to 2 weight percent of Sn and 0 to 2 weight percent of Pb. In the preparation process, the laser input energy density is controlled within the range of 8.96-13.27 J / mm, and the double strengthening effects of grain refinement and martensite content increase can be synchronously achieved. The main phase structure of the obtained coating is twin-crystal martensite, meanwhile, the coating contains a small amount of alpha-Cu lubricating phase, gamma phase and Fe-rich hard phase, and the dry friction coefficient of the coating is 1t; 0.35, and the solidification hardness gt; and the voltage is 350HV. Compared with the existing self-lubricating tin-based babbitt metal and copper-tin alloy with similar friction coefficients, the coating disclosed by the invention realizes synergistic improvement of high hardness and low friction performance, and is particularly suitable for dynamic friction and wear working conditions with higher impact resistance requirements, such as robot motion joints, precision mechanical transmission parts and the like.

The utility model relates to a continuous feeding and surface treatment integrated device for a copper strip. The continuous feeding and surface treatment integrated device comprises an unwinding unit, a grinding unit and a shaping unit arranged between the unwinding unit and the grinding unit. On one hand, copper strip unwinding and feeding are carried out on the basis that the center line of a copper strip coil is kept vertical, the copper strip unwinding difficulty is greatly reduced, the risk that the copper strip is deformed and broken due to stress is reduced, and the feeding quality of the copper strip is effectively improved; on the other hand, the surface of the copper strip is kept flat by arranging the shaping channel so as to ensure that the surface of the copper strip is comprehensively and uniformly ground, the oxide layer removal rate is increased, and the product yield is increased; in addition, the structure is simple, implementation is convenient, power consumption is low, and cost is saved.

The invention belongs to the technical field of cross-linked polyethylene insulated power cables and cable winding and weaving equipment, and particularly relates to a high-voltage insulated power cable which sequentially comprises the following structural layers from outside to inside: an outer sheath, a flame-retardant wrapping tape, a metal armor layer, a heat insulation layer, a filling layer and at least three insulated wire cores, each insulating wire core comprises a conductor, an inner sheath, a buffer layer and an insulating layer from inside to outside. The thermoplastic elastomer has good elastic buffering, the winding and weaving equipment is arranged to adapt to winding and weaving of the thermoplastic elastomer on the buffering layer of the cable, periodic pulling force is applied to the strip-shaped thermoplastic elastomer material under the driving of the notch fluted disc through the pulling piece capable of eccentrically rotating in the winding and weaving equipment, and therefore the elastic buffering performance of the cable is improved. And the buffer layer is always tightly attached to the surface of the cable in the winding process, bubbles and gaps are effectively reduced, and therefore the winding uniformity, tightness and overall coating quality of the buffer layer are improved.

The invention discloses a constant-temperature fusion covering forming mechanism for granular resin 3D printing, and relates to the technical field of granular resin 3D printing, the constant-temperature fusion covering forming mechanism comprises a built-in frame and a third servo motor, auxiliary assemblies used for assisting feeding are arranged on the two sides of the interior of the built-in frame, and each auxiliary assembly comprises an auxiliary frame, a second hydraulic rod, a built-in plate, a material guide frame and a material guide pipe; a second hydraulic rod is arranged in the auxiliary frame. According to the constant-temperature cladding forming mechanism for granular resin 3D printing, the dual-heating design is adopted through the auxiliary assembly, heating wires in a material guiding frame and an auxiliary frame are matched with an S-shaped material guiding pipe, granular resin is fully preheated, the melting temperature is kept stable through a heat preservation layer outside a material barrel, and the situation that the forming quality is affected by temperature fluctuation is avoided; the two sets of built-in plates improve the feeding efficiency, meanwhile, a fault auxiliary discharging function is achieved, the hollow structure of the auxiliary frame and the design of a threaded cover are convenient to maintain, the phenomena of material blocking and material breaking are effectively reduced, and the printing efficiency and stability are improved.

This invention discloses a method for manufacturing a traveling wave pump rotor, comprising the following steps: machining the outer shell, machining the base plate and the first injection-molded plate, machining the cover plate and the second injection-molded plate, machining the enclosure mechanism, and machining and forming the rotor. The manufacturing method of this invention is simple in its steps, which not only improves the integral machining quality of the traveling wave pump rotor, but also facilitates the formation of an injection-molded layer on the surface of the traveling wave blades, reducing friction and wear of the traveling wave pump rotor during operation, while also reducing noise and extending the service life of the traveling wave pump.

This invention discloses a graphene-coated silicon nanocomposite material, its preparation method, and its application, belonging to the field of battery materials technology. The preparation method of this composite material includes: firstly, removing the oxide layer on the surface of the silicon nanocomposite and performing plasma activation to obtain silicon nanocomposite with active sites and functional groups on the surface; dispersing it in a carbon source precursor solution, mixing it evenly, and then centrifuging and drying it at low temperature to obtain a silicon-coated precursor; under inert gas protection, carbonizing the silicon-coated precursor at 500-700℃ and simultaneously introducing it into a catalyst precursor, then introducing a carrier gas containing hydrogen and carbon, and heat-treating it at 800-950℃; finally, acid washing, water washing, and drying to obtain the target material. This invention achieves low-temperature controllable growth of graphene by optimizing process parameters. In the prepared core-shell composite material, 1-30 few-layer graphene shells are tightly bonded to the silicon nanocomposite core. When used as a negative electrode active material for lithium-ion batteries, it exhibits high specific capacity, excellent cycle stability, and rate performance. The process is easily scalable and has promising application prospects.

The invention provides graphene in-situ coated copper powder and a preparation method thereof, and belongs to the technical field of metal powder materials. The preparation method comprises the following steps: (1) preparing a precursor: mixing copper powder, a solid carbon source and a spherical anti-sintering agent, and carrying out ball milling to obtain a uniformly mixed precursor; and (2) in-situ growth: putting the precursor into a tubular furnace, introducing protective gas, heating to 800-1000 DEG C by adopting a precise thermal cycle process, and keeping the temperature for 1-4 hours to realize in-situ growth of graphene. And (3) post-treatment is conducted, specifically, the product is subjected to alkali washing, alcohol washing and vacuum drying, and the graphene-coated copper powder is obtained. According to the graphene in-situ coated copper powder prepared through the method, the oxidation resistance, the coating uniformity, the high-temperature stability and the like of the graphene in-situ coated copper powder can be remarkably improved, and therefore the problems existing in the prior art are solved.

The application provides a laser cladding lap joint quality control method and device, a storage medium and a terminal, wherein the method comprises the following steps: acquiring an image of a reference stepping area in a previous cladding path to be overlapped with a to-be-cladded path to-be-stepped area, and acquiring vertical distance data of a laser cladding nozzle and the to-be-cladded path to-be-stepped area; based on the image of the reference stepping area and the vertical distance data, an actual half-width of the reference stepping area is acquired; according to the relationship between the actual half-width and a preset half-width, the position of a cladding center in the laser cladding nozzle is corrected based on a preset correction mode, so that the driving system drives the laser cladding nozzle with the corrected cladding center position to perform cladding on the to-be-stepped area. The application can realize dynamic control of the lap joint rate, and at the same time, conformal cladding of a thin plate is realized, and the cladding quality is higher.

This utility model belongs to the field of edge-wrapping equipment and provides a fully automatic edge-wrapping device, including: a frame equipped with a support platform for placing the packaging film to be wrapped; a heating mechanism mounted on the frame, which can be moved closer to or further away from the support platform to ensure the heated packaging film adheres tightly to the product; a pressing mechanism and several auxiliary mechanisms, with the pressing mechanism movably positioned above the support platform. Compared with the prior art, the advantages of this utility model are that by heating the packaging film to adhere more tightly to the product surface, and with the pressing mechanism pressing the product onto the packaging film, while the peripherally distributed auxiliary blocks push the edge of the packaging film towards the side wall of the product, a uniform and wrinkle-free edge-wrapping effect is achieved. The entire edge-wrapping process requires no manual intervention, improving production efficiency, reducing labor costs, and ensuring the consistency and aesthetics of the packaging film when wrapped on the product, making it suitable for continuous industrial production.